package com.sky.controller.admin;

import com.sky.constant.MessageConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.mapper.DishMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishItemVO;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Set;

@RestController("adminDishController")
@RequestMapping(("/admin/dish"))
@Slf4j
@Api(tags = "菜品相关接口")
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private RedisTemplate redisTemplate;

    @PostMapping
    @ApiOperation("新增菜品")
    public Result save(@RequestBody DishDTO dishDTO) {
        log.info("新增菜品：{}", dishDTO);
        dishService.save(dishDTO);
        //清理缓存数据
        //新增的菜品默认是停售的，不会显示在前端页面中，所以不需要清理缓存
//        String key = "dish_" + dishDTO.getCategoryId();
//        cleanCache(key);
        return Result.success();
    }

    @GetMapping("/page")
    @ApiOperation("菜品分类查询")
    public Result<PageResult> pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        log.info("菜品分页查询:{}", dishPageQueryDTO);
        PageResult pageResult =dishService.pageQuery(dishPageQueryDTO);
        if (pageResult == null) {
            dishPageQueryDTO.setPage(1);
            pageResult = dishService.pageQuery(dishPageQueryDTO);
        }
        return Result.success(pageResult);
    }

    @DeleteMapping
    @ApiOperation("删除菜品")
    public Result deleteByIds(@RequestParam List<Long> ids) {
        log.info("删除菜品：{}", ids);
        dishService.deleteByIds(ids);

        //将所有的菜品缓存数据清理掉，所有以dish_开头的key
        cleanCache("dish_*");

        return Result.success();
    }

    @GetMapping("/{id}")
    @ApiOperation("根据菜品id查询菜品")
    public Result<DishVO> getById(@PathVariable Long id){
        log.info("根据id查询菜品：{}", id);
        DishVO dishVo = dishService.getById(id);
        return Result.success(dishVo);
    }

    @PutMapping
    @ApiOperation("修改菜品")
    public Result update(@RequestBody DishDTO dishDTO){
        log.info("修改菜品：{}", dishDTO);
        dishService.update(dishDTO);

        //将所有的菜品缓存数据清理掉，所有以dish_开头的key
        cleanCache("dish_*");

        return Result.success();
    }

    @PostMapping("status/{status}")
    @ApiOperation("启售停售菜品")
    public Result startOrStop(@PathVariable Integer status, @RequestParam Long id){
        log.info("修改菜品状态：{}", status);
        dishService.startOrStop(status, id);

        //将所有的菜品缓存数据清理掉，所有以dish_开头的key
        cleanCache("dish_*");

        return Result.success();
    }

    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> getDishesByCategoryId(@RequestParam Integer categoryId){
        log.info("根据分类id查询菜品：{}", categoryId);
        List<DishVO> dishVOS = dishService.getDishesByCategoryId(categoryId);
        return Result.success(dishVOS);
    }

    /**
     * 清理缓存数据
     * @param pattern
     */
    private void cleanCache(String pattern){
        Set keys = redisTemplate.keys(pattern);
        if (keys != null) {
            redisTemplate.delete(keys);
        }
    }
}
